Cogent (ISP/Spain): I can't solve my multiple NAT problem and am running out of ideas

[Rugby (aka Daniel or Big Dan)]

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Roon ARC not working with Deutsche Glasfaser likely due to CG-NAT

Hi everyone, Thank you for your patience as we’ve merged several posts from users here who are stranded without port forwarding as a result of the carrier-grade network address translation implemented by Deutsche Glasfasaer. To clarify where things stand, more broadly: At this time, Roon ARC requires an external (WAN) IPv4 address for port forwarding and on-the-go connectivity. Similarly, Roon ARC requires the Core to have an address in the IPv4 format, as it doesn’t yet support IPv6 at this …